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1
MHT CET 2025 23rd April Evening Shift
MCQ (Single Correct Answer)
+1
-0

$\mathrm{I}-\mathrm{V}$ characteristics of LED is shown correctly by graph

MHT CET 2025 23rd April Evening Shift Physics - Semiconductor Devices and Logic Gates Question 1 English
A
d
B
b
C
a
D
c
2
MHT CET 2025 23rd April Evening Shift
MCQ (Single Correct Answer)
+1
-0

By increasing the temperature, the specific resistance of a conductor and a semiconductor respectively

A
increases, increases.
B
decreases, decreases.
C
increases, decreases.
D
decreases, increases.
3
MHT CET 2025 23rd April Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following statements is TRUE for n-type semiconductor?

A
Holes are majority carriers and trivalent atoms are dopants.
B
Electrons are majority carriers and trivalent atoms are dopants.
C
Holes are minority carriers and pentavalent atoms are dopants.
D
Electrons are minority carriers and pentavalent atoms are dopants.
4
MHT CET 2025 23rd April Morning Shift
MCQ (Single Correct Answer)
+1
-0

In a common emitter transistor amplifier circuit, the current gain $\alpha=0.8$. If the base current changes by $3 \mu \mathrm{~A}$ then the collector current changes by

A
$4 \mu \mathrm{~A}$
B
$12 \mu \mathrm{~A}$
C
$6 \mu \mathrm{~A}$
D
$24 \mu \mathrm{~A}$
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